The option to propose a resolution might come up if any are possible. For example, if you're the only AP member, none but the resident election will ever come up. If all members already have open borders with each other, the resolution to sign open borders won't come up. If none of the members are trading with a non-member, the resolution to stop trading with that non-member can never come up. If diplomatic victory through the AP is currently impossible because the requirements aren't met, that resolution won't come up, and so on. Fulfill the requirements, and you might get to propose resolutions.