Sign out of the first ID, sign into the second ID, install the program you want, sign out. I (and many people) used to buy all apps under one ID and would have

Sign out of the first ID, sign into the second ID, install the program you want, sign out. I (and many people) used to buy all apps under one ID and would have to do this. Apple and the software publishers have moved to "Family Sharing" for most apps which means I can buy an app and they can install it without having to deal with multiple App Store IDs. That's true for MacOS and iOS.