How to set Grow column and row height in crosstab reports

hello guys,
i am working with crystal report 9.0, i have one report that contains multiple columns in crosstab. but in this report column and row headings are not growing according to content length and overlapping on other column and row values. also can grow option is disabled for row and column headings in crosstab. can anybody help me to solve this problem.you need to manually increase the width as much as possible