You can add a certain username or a group and then let them execute certain things ... without password if you want.
Example from my own system:
So the result here is that these people and groups may execute above commands --and _ONLY_ exactly above commands-- without being asked a password.
# Members of admin group may open VPN's via tuncfg
%admin ALL=NOPASSWD: /sbin/tuncfg
# Same for Hamachi users here:
%hamachi ALL=NOPASSWD: /sbin/tuncfg
# OpenVPN for John
john ALL=NOPASSWD: /usr/sbin/openvpn --config /etc/openvpn/customers/client.conf
John above can even open VPN tunnels ... but only if he triggers the command exactly as above.
I guess this is what you want?