Here is a Membermanaged Operating Agreement template available in 3 formats. This can be used for a Single-Member LLC or a Multi-Member LLC.A Texas single-member LLC operating agreement is a legal document that allows the sole owner of an LLC to establish the company's operations. Use our free, attorney-drafted operating agreement template for your single member LLC. This document is a comprehensive Texas LLC Operating Agreement that outlines the company's structure, management, and member responsibilities. The term of the Company shall commence upon the filing of the. Certificate of Formation with the Texas Secretary of State and shall have perpetual existence. Free Texas LLC Operating Agreement Template. Use our free online tool to create your own single-member LLC operating agreement. A Texas LLC Operating Agreement is a legal document for LLC members to document how an LLC in Texas will be run.