partner_external_maps/security/ir.model.access.csv

id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
access_map_website_read,Read access on map.website to everybody,model_map_website,,1,0,0,0
access_map_website_full,Full access on map.website to System user,model_map_website,base.group_system,1,1,1,1