Linking cards allow you to visualize relationships and dependencies between your cards or external links.
Types of Card Links
GreenLine provides 4 ways of linking (up, down, left, right). A card can have an unlimited amount of these 4 types of links. Links can be created from one card to another or a link can be made to an external URL.
Links can be grouped into 2 types of links, related (parent-child) and dependent (successor-predecessors).
Link Types
↑ Parent – A top or root level of a relationship. Parent cards are often used to track overall progress.
↓ Child – A sub-card of a relationship.
→ Successor – A card that should be completed after the current card.
← Predecessor – A dependent card that should be completed before the current card.
External Links
An external link url can be linked to any card in GreenLine using the same 4 types of links.
Add a link
Card Links (cards within GreenLine)
To add a link to another card within GreenLine, follow these steps.
- Open your card editor and open the Links panel under Tasks.
- Click Add Link.

Choose whether you want to link to a new card or an existing card.
Link to Existing Cards
1. After pressing on the 'Existing' tab you can choose from the board dropdown which board you want to look for cards on.
2. After that you can search for the card by it's card title or ID.
3. Once you have selected an existing card, choose the link type from the dropdown (↑ Parent, ↓ Child, → Successor, ← Predecessor)


4. Press the 'Link' button and you are done.
Link to New Card
1. After pressing on the 'New' tab you can choose from the board dropdown which board you want to create the card on. Then you can choose which column for the card to go to. You can also pick from a card template, set a card label, owner, date, and position.

2. Once everything is filled out press the 'Next' button to continue.
3. With the new card in place, choose the link type from the dropdown (↑ Parent, ↓ Child, → Successor, ← Predecessor)


4. Press the 'Link' button and you are done.
Remove a Link
To remove a link, open your card editor and open the Links panel. Locate the card you want to unlink and click the unlink action button. Your linked card will be unlinked immediately.

Link Type Progress Bar Visualization
Each card’s links are represented by progress bars to quickly identify the progress. A linked card uses the linked card’s state color to indicate where it currently resides in the overall process of the board it belongs to. Progress bars are available within the card detail links tab and on the cards on the board. The bucket state colors are as follows:
- Dark Blue – Backlog state
- Blue – To Do state
- Yellow – In Progress state
- Orange – Buffer state
- Green – Done state
- Grey – None state or External link state

Gantt Visualization
Links for a card can also be viewed in a Gantt format. From the card editor – Links panel, choose the Gantt View action button.

Linked cards can be viewed by planned or actual dates. The planned dates are the linked card’s planned dates that can be manually set for each card. The actual dates are the dates that a card accumulates when it enters its first In Progress column and when it enters a Done column on a board.

