Valve has given tournament organisers a deadline of April 10 to finalize their proposals to host Regional Major Ranking (RMR) competitions.

In an email obtained by HLTV.org, Valve urged tournament organisers to submit their proposals in the next days, explaining that the "window to finalize the RMR event calendar is very small".

Valve announced on Thursday that the invitations for the ESL One Rio Major have been replaced by a ranking system that will take into account the results of several tournaments that will be held in the months leading up to the Brazilian event. The number of slots that the regions will have in the three stages of the Major is based on that region's performance at the StarLadder Major.

ESL will host the first RMR Series, called 'ESL One: Road to Rio', with a second one scheduled to take place later in the year, between the player break and October 18. Both RMR Series will have $255,000 in prize money and will cover all six regions.

Valve is also open to the idea of having more competitions included in the RMR circuit and encouraged tournament organizers who are willing to reconfigure their events to reach out.

In the email, Valve explained that it is looking for proposals for RMR competitions both in the Fall – either as a series featuring all six regions or as a tournament covering fewer regions – and in the time period between ESL One: Road to Rio and the player break.

Contacted by HLTV.org, a Valve representative confirmed that the company is open to "any number of proposals", clarifying that that "there's no requirement that each region has the same number of RMR competitions" between the two RMR Series.