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1. On the Browse Investigations page, click Add/Remove fields. The Metadata Selection panel appears to the left of the pie charts. (Click the following image to expand it.)
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2. You can either search or browse for a field of interest in the Metadata Selection panel:

   • Expand fields by clicking the triangle icon next to each item. 
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   • In the Search field, start typing any part of a field name. The system filters the list of fields by that search term. (To clear a search term, click clear. The system unfilters the list of fields.)
     

3. Note the default selection of some fields: 

   • Studies > STUDY PROTOCOLS > Study Protocol Name

   • Study Assays > Assay > Study Assay Technology Type

   • Study Assays > Assay > Study Assay Measurement Type

   These field values are the ones that appear in the three default pie charts on the Browse Investigations page. If you clear these check boxes, those pie charts disappear from the page. When you reset all of the pie charts or select Investigations > Browse, however, they reappear.
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4. Click any check box to select the corresponding field. For example, select Study Protocol Type. The pie charts update to include one for Study Protocol Type. 
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   Correspondingly, the Investigations list updates to show Study Protocol Type in the fields available for the investigation.
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   You could also opt to clear all of the check boxes except for Study Protocol Type. In this case, that is the only pie chart that would appear.
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   When you clear a field, it also disappears from the Investigations list.

5. When you have selected or cleared as many fields as you want from the pie charts, click Hide select menu. The Select menu moves back to its original position.