Arthritis Care has established a working group in a bid to stave off a threatened split over plans for a radical restructure.
Many of its 500 branches could close under proposals to centralise control of funds and eliminate a £900,000 financial deficit.
The working group, comprising the national and regional committee chairs, senior staff and trustees, was agreed at a meeting last week to deal with the revolt by the charity's regions.
The group is expected to complete its work by September and report back to the trustee board the following month. Its remit seeks to "reach a common understanding of the reasons behind the need for change". But it includes a concession to critics of the restructure plans, by agreeing to "look afresh for any possible additional solutions to the key issues confronting trustees".
Opponents of the changes hope to collect 3,500 members' signatures to secure a vote on the plans at the charity's AGM on 3 July.