Q: Is it possible to customize Function Button to each user?
A: Yes. Each configuration can be set up to be used by specific users.
Q: Can the buttons be moved to another location than on the right side of the screen?
A: Yes, you can use the Item Placement Tool to move the buttons
Q: When I add a function Button configuration to my screen it stop remembering it's last opened size. What is wrong?
A: This is a know limitation of the SAP SDK in that whenever you add button we need to increase the width of the screen to display the buttons. Manipulating width/height of a screen via the SDK have the limitation the it then can't apply last remembered size. The workaround for this is to make the button via Item Placement Tool (B1UP2016.10 or later) or the Content Creator and then use a B1 Validation System config to add the action of when the button is pressed. Drawback of this is B1UP can't set room for the button and you need to place it in some of the existing space