From the regs,

"Derby and Tournament Licensing
The licensing of organized fishing derbies and tournaments (Competitive Fishing Events or CFE's) is required for events involving more than 25 participants. The type of licence depends on the number of participants and the value of prizes. The cost of all licences is $25 and will only be issued to organizers who are residents of Alberta. Best Management Practices have been developed and incorporated into licence conditions to reduce impacts on fish populations. Events with 25 or fewer participants do not require a licence, but organizers are encouraged to voluntarily register such events and to follow best management practices.

The CFE website, http://srd.alberta.ca/fishwildlife, provides organizers with application and reporting forms, licence conditions, contact information, and information on how best to operate an event. A Questions and Answer document addresses the issues event organizers need to consider prior to advertising and running an event. "