My friend can´t connect to my network

Hello. I installed hamachi today. I have Windows 10. After the end of the instalation there popped up question from my pc - “Do you want to turn on sharing between PCs and connect to devices on this network?”. I didn´t clicked yes, and now my friend can´t join to my network. How to set it to yes? I want to use it to play FS19 multiplayer. Sorry for my bad English. Have a great day!