You can separate the commands with a semicolon, or use a script payload instead.
@davidacland's answer is good if the second command is reliant on the first. For example:
mkdir ~/Desktop/test; cp /some/files ~/Desktop/test
might act strangely if there was a problem creating the directory, whereas
mkdir ~/Desktop/test && cp /some/files ~/Desktop/test
will only execute the second command if the first returns a zero exit status.
Even more fun, you can use "||" to run the second command only if the first one produces a failure (non-zero exit status).
basically this is what i want to have done via 'files and processes' --> 'execute command'
i know i can also do it in a script, i like to give both ways a shot
lpadmin -p MathLab_Xer4112_Rm200 -o printer-is-shared=false; jamf policy -trigger TESTXeroxDriverCustomEvent