L2TP/IPsec priority - how to?

Hello

I set up L2TP/IPsec server on my RB2011 - around 6-10 users are constantly connected to it and work from home. I’d like to give this VPN highest priority because from 06:00 to 16:00 there are few programs that are eating up connection a lot, that affects stability and comfort of VPN connection as a whole (cloud backup program - backup every 5 minutes, e-mails etc - basically from 06:00 to 16:00 our office is opened and 12 people are also using normal Internet connection).

Is there a way to give VPN L2TP/IPsec highest priority so the comfort of work would be almost the same regarding what other people in the network do?

Kind Regards tech people :wink: