Spawning another installer from main installer

Hello,

my program needs to spawn another installer made by antoher program,

A.) is there a way to pause nsis until the other .exe has exited, i.e. the install finished?

B.) is there a way to automate the other installer so the user doesn't have to interact with it.

Thanks in advance.

ExecWait will wait for the process to finish.

Most installers install silently with a /S option or /Q something of the like. Check the documentation for that installer to see if it has a silent mode.