a user to view either a year quarter month month week day or day shift hour nest and then to select one or more of the objects in the nest if the nesting were instead a 4 order nesting the nesting navigator would be adjusted accordingly fig3 is an example of a time period nesting navigator this nesting navigator may be used to navigate the timeline represented by the example timeline nesting shown in fig2 the illustrated time period nesting navigator 300 includes several different nest viewer controls 303 305 which are used to navigate to and select objects within each of the different types orders of nests of the timeline nesting 200 in particular the year quarter month viewer control 303 is used for navigation of the year quarter month nest 201 the month week day viewer control 304 is used for navigation of the month week day nests including nests 205 and 206 and the day shift hour viewer control 305 is used for navigation of the day shift hour nests including nests 210 and 211 in addition in the example of fig3 the time period nesting navigator 300 includes a button 301 for entering multiple selection mode where multiple objects may be selected and a button 306 for confirming a selection a title 302 for the current period that has been selected is also displayed to note the example nesting navigator illustrated in fig3 demonstrates the concurrent availability of the various nest viewer controls 303 305 arranged vertically.