Authorizing units of the State government and political subdivisions and other local entities to file with the Department of Assessments and Taxation the names, addresses, designations, and written consents of persons on whom process and notice may be served on behalf of the entities; authorizing resident agents to change addresses and resign; specifying that there is no charge for these filings; providing for the effect of these filings; providing for the effect of service on a resident agent; etc.