Missing keys for wireless trust keyboard "Vaia"

[niculinux]

Hello, i've recently purchased the wireless keyboard "vaia" commercialized by Trust but it's missing the phisichal keys "block scorr" "num lock" and "ins" and i dont't know the Fn keys combo to replicate these. Ive downloaded even the official manual but nothing useful from the problem i could learn from it

In fact, running dosbox, thise keys are needed by some games, after some experiments i accidentally discovered that Fn + F4 keys combo equals to "bloc scorr" key. Does anydoby know the combo for the other two keys ?

Here is the keyboard:

Thanks in advance

Trivia: Pressing the Fn + F12 combo shuts down my raspberry Pi3, did not try the other keys though...

[niculinux]

Nobody knows hot to help? Ah the above mentioned combo works with the italian layout which i sat in retroarch otions menu