đĄ Grant cards can't be merged inside HCB. If you have more than one grant and want them combined, reach out to the programs that issued them.
Why grants stay separate
Each grant card comes from a specific program, with its own amount, rules, and allowed merchants. Because those settings belong to the program, HCB can't merge one grant into another for you.
What to do instead
Contact the programs that issued your grants and tell them what you're trying to do. Any change, like moving funds or issuing a single combined grant, has to come from them. If your grants are from different organizations, you'll need to talk to each one.