Service profile : UL rate/ Ul policy

ChirpStack Network Server
1

I see from https://www.chirpstack.io/network-server/features/service-profile/
that couple service policy properties is not supported on the other side i’ve just seen description in API calls description on github(see below). COuld you pls. clarify what i need to do to have some service profile properties to be in play - most interested ul/dl rate and packet size? Can i add it by API or some sort of config?
message ServiceProfile {
// Service-profile ID.
bytes id = 1;

// Token bucket filling rate, including ACKs (packet/h).
uint32 ul_rate = 2;

// Token bucket burst size.
uint32 ul_bucket_size = 3;

// Drop or mark when exceeding ULRate.
RatePolicy ul_rate_policy = 4;

// Token bucket filling rate, including ACKs (packet/h).
uint32 dl_rate = 5;

// Token bucket burst size.
uint32 dl_bucket_size = 6;

// Drop or mark when exceeding DLRate.
RatePolicy dl_rate_policy = 7;