(a)For Appellant. Unless another attorney is designated, lead counsel for an appellant is the attorney whose signature first appears on the notice of appeal.(b)For a Party Other Than Appellant. Unless another attorney is designated, lead counsel for a party other than an appellant is the attorney whose signature first appears on the first document filed in the appellate court on that party's behalf.(c)How to Designate. The original or a new lead counsel may be designated by filing a notice stating that attorney's name, mailing address, telephone number, fax number, if any, email address, and State Bar of Texas identification number. If a new lead counsel is being designated, both the new attorney and either the party or the former lead counsel must sign the notice.