Different machines may use different build plates.
UP Plus 2, UP mini, UP mini 2, UP BOX and UP BOX+: Perf Board, and Flex Board
UP300: Perf Glass Board, and Flex Glass Board.
X5: Per Board.
The Cetus MK1 MK2 and coming MK3 can not support change the print plate type in software currently.
After the nozzle height detection is done, a popup dialog allows user to choose from the available build plates, or click UP on the left side menu, click Maintenance, find Print Board to change the type to the desired value.