This is usually a year followed by one or two letters, and zero to three digits, such as 1989 AC or 1997 XF11. Enter the provisional designation, and Guide will also recenter on that asteroid. Bright open clusters have usually been given Messier, NGC, or IC numbers. Others appear in catalogs like Collinder, Tombaugh, or Berkeley. Select a catalog, type the number of the desired cluster in that catalog, and Guide will recenter on that object.
Globular clusters are huge collections of up to millions of stars, packed into dense balls.
Examples are Messier 13, Omega Centauri, and 47 Tucanae. Click on one, and Guide will recenter on it. Click on this option and Guide lists currently installed user datasets. Click on one and enter the name of an object in that dataset. If Guide can find that object, it will recenter the chart on it.