Hygena Turbo De Luxe quick question

Hello – I’ve found this forum via Google and it never ceases to amaze me how many helpful people there are out there!

My question I think is simple – I have ‘inherited’ a Hygena Turbo De Luxe in my new house and I cannot phathom what options are on the selector, as the dial has worn away.

All I can see on the dial is a few worn squares.

Having read around other posts I note the model number would be useful but the unit is built in, so getting at the back of the unit is practical.

Anyway this is what it looks like:

Dark brown in colour, electric with fan assist.

Left hand side:

Digital clock with 5 buttons underneath:
– Timer (a bell)
– (a pot cooking)
– Stop (a pot)
– (a hand)
– A knob

Right hand side:

Selector knob with 7 settings

1 – off
2 – ?
3 – ?
4 – ?
5 – ?
6 – I know this one turns the oven on with fan as it’s marked with tippex
7 – ?

Regulator knob with ‘0’, what looks like a bell, then numbers up to 220.

I’d be really happy if I knew how to put the grill on so I can make a really nice cheese and ham toastie.

Thanks in advance!