Twitter is a wonderful tool to get in the conversation of your industry, and understand a variety of demographics concerning where you primarily operated. A huge component of twitter is engagement.
Management includes the following:
Engaging with followers and other business pages on a regular basis
Hearting - Replying to tweets - retweeting - responding to direct messages - keeping up to date with currently industry related topics - following and connecting with groups and lists.
Posting on a regular bases
A posting schedule is configured for your business based on the insight of your page and the activity of your followers.
Twitter does require more time / and more posting because it is such a hyperactive platform.