Hello @servant-crop,
You can create multiple user by going to Admin panel > users .
Similarly if you want the multiple user to be admin or set same role then you can set the role by going to Admin Panel > Users > All users then to the particular user . Here you can find the field Role . From here choose the options Administrator or other options from the drop down .
Screen shot :
https://image.prntscr.com/image/b2eCw5Y9RHGZACn_dTZtxw.png
Hope this helps.
If you have any confusion further, please let us know.
Best Regards!!