As a contributor, you are asked to submit your proposals. You are not obligated to submit a proposal if you don’t feel confident: you can decide which single tasks (sub questions) to tackle. Because Oxway wants to encourage an open flow of ideas, there is no limit on submissions. Think of it as a wide open brainstorming session where you help your fellow contributors discover different solutions to an issue. Every idea and possibility should be put on the table. You can always amend your proposal later, unless it does not pass the voting phase and is therefore not selected for the discussion. Indeed, depending on the challenge, the system might reduce (according to peer-to-peer review results) the number of proposals for a better and more interactive discussion phase.
In the submission phase, and in order to avoid any biases, there is no interaction among contributors. No one can see other users' proposals.
The community achievement unlocks progressively starting with this phase. By submitting proposals, each contributor helps the community unlock the reward that will be distributed to the top contributors at the end of the challenge.