How to give Windows write access to a samba share?


I have a samba share located in /home/lionschild/Public, which my spouse can access over our LAN with their windows10 PC. I want my to give this windows pc complete write access to the samba share, but nothing I try seems to work, including trying to brute force it with chmod -R 777 /path/to/share/.

Advice would be greatly appreciated, as my spouse needs to be able to organize about 100gb worth of stuff on my PC through this share since their PC has no free space.